/* 主题：docs/theme.md「Nautic-Chain Bathymetric Explorer」——深海测深图 × 声呐终端。只有深色。 */
:root {
  color-scheme: dark;
  /* 深度层级 */
  --abyss: #060d17;          /* Level 0 背景 */
  --deep: #0a192f;           /* Level 1 面板 */
  --console: #112240;        /* Level 2 卡片 */
  --trench: #1e293b;         /* 边框、经纬网 */
  --contour: #0a192f;        /* 等深线 */
  /* 信号色 */
  --sonar: #00ffcc;          /* 主色：验证通过、命中、实时 */
  --sonar-dim: #00e0b3;
  --cyan: #38bdf8;           /* 次色：数据、交互边框 */
  --cyan-2: #7bd0ff;
  --brass: #d4af37;          /* 第三色：派彩、倍率、审计印章 */
  --brass-2: #ffdf85;
  --error: #ffb4ab;
  --error-bg: #93000a;
  /* 文字 */
  --text: #dce3f2;
  --text-2: #94a3b8;         /* 数据读数、次要文字 */
  --dim: #7a8aa0;            /* 标签（比 theme 的 #64748b 稍亮，小字对比度 ≥ 4.5） */
  --tick: #64748b;           /* 纯装饰的刻度 */
  /* 字体 */
  --f-head: "Syne", "Noto Sans SC", system-ui, sans-serif;
  --f-body: "Space Grotesk", "Noto Sans SC", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", "Noto Sans SC", ui-monospace, monospace;
  /* 形状与间距 */
  --r-sm: 2px; --r: 4px; --r-md: 6px; --r-lg: 8px;
  --gutter: 1.5rem;
  --margin: 3rem;
  --maxw: 1600px;
  --textw: 1120px;
  --cut: 6px;                /* 按钮切角 */
}
@media (max-width: 1024px) { :root { --gutter: 1.25rem; --margin: 2rem; } }
@media (max-width: 640px) { :root { --gutter: 1rem; --margin: 1rem; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; min-height: 100vh; background: var(--abyss); color: var(--text);
  font: 400 16px/26px var(--f-body); overflow-x: hidden;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='800' viewBox='0 0 1200 800'%3E%3Cg fill='none' stroke='%230a192f' stroke-width='1'%3E%3Cpath d='M0 120C180 60 320 210 520 150S860 40 1200 130'/%3E%3Cpath d='M0 180C200 120 330 260 540 205S880 100 1200 190'/%3E%3Cpath d='M0 260C220 200 360 330 560 280S900 170 1200 260'/%3E%3Cpath d='M0 420C160 380 300 470 470 430S820 330 1200 430'/%3E%3Cpath d='M0 490C180 450 320 540 500 500S850 400 1200 500'/%3E%3Cpath d='M0 640C240 600 380 700 600 650S940 560 1200 640'/%3E%3Cpath d='M0 710C250 670 400 760 620 720S960 630 1200 710'/%3E%3C/g%3E%3C/svg%3E"),
    linear-gradient(rgba(30,41,59,.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,41,59,.28) 1px, transparent 1px);
  background-size: 1200px 800px, 96px 96px, 96px 96px;
  background-attachment: fixed, fixed, fixed;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--cyan-2); }
:focus-visible { outline: 2px solid var(--sonar); outline-offset: 2px; }
p { margin: 0 0 1em; }
h1, h2, h3 { font-family: var(--f-head); margin: 0; color: var(--text); }
h1 { font-size: 48px; line-height: 56px; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: 36px; line-height: 44px; font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 20px; line-height: 28px; font-weight: 600; font-family: var(--f-body); letter-spacing: .01em; }
@media (max-width: 640px) {
  h1 { font-size: 32px; line-height: 40px; letter-spacing: -0.01em; }
  h2 { font-size: 26px; line-height: 34px; letter-spacing: 0; }
}
code, .mono { font-family: var(--f-mono); font-size: .92em; }
code { color: var(--cyan-2); background: rgba(56,189,248,.08); padding: 0 .3em; border-radius: var(--r-sm); }
.label { font: 500 11px/16px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); margin: 0 0 .5rem; }
.label-lg { font: 500 13px/18px var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--dim); }
.muted { color: var(--text-2); }
.small { font-size: 14px; line-height: 22px; }
.xs { font-size: 12px; line-height: 18px; }
.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.gold { color: var(--brass); }
.sonar { color: var(--sonar); }
.cyan { color: var(--cyan); }
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; z-index: 100; background: var(--deep); padding: .5rem 1rem; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--margin); }
.wrap-text { max-width: var(--textw); margin: 0 auto; padding: 0 var(--margin); }
.section { padding: 5rem 0; position: relative; }
.section-tight { padding: 3rem 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 2rem; flex-wrap: wrap; }
.section-head p { max-width: 640px; margin: .75rem 0 0; color: var(--text-2); }
.lead { font-size: 18px; line-height: 30px; color: var(--text-2); max-width: 720px; }
.grid { display: grid; gap: var(--gutter); }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.split { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: var(--gutter); }
@media (max-width: 1024px) { .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g3 { grid-template-columns: 1fr; } .split { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .g2, .g4 { grid-template-columns: 1fr; } .section { padding: 3.5rem 0; } }

/* ── 顶栏 ───────────────────────────────────────────── */
.topbar { position: sticky; top: 0; z-index: 50; background: rgba(6,13,23,.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--trench); }
.topbar-in { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--margin); height: 64px; display: flex; align-items: center; gap: 2rem; }
.brand { display: flex; align-items: center; gap: .6rem; color: var(--text); font: 700 18px/1 var(--f-head); letter-spacing: .01em; white-space: nowrap; }
.brand:hover { color: var(--text); }
.brand-mark { width: 28px; height: 28px; color: var(--sonar); }
.nav { display: flex; gap: .25rem; flex: 1; }
.nav a { color: var(--text-2); padding: .5rem .75rem; border-radius: var(--r); font-size: 15px; }
.nav a:hover { color: var(--text); background: rgba(56,189,248,.06); }
.nav a[aria-current="page"] { color: var(--sonar); box-shadow: inset 0 -2px 0 var(--sonar); border-radius: 0; }
.topbar-end { display: flex; align-items: center; gap: .75rem; }
.menu { display: none; background: none; border: 1px solid var(--trench); border-radius: var(--r); width: 40px; height: 40px; padding: 10px 9px; cursor: pointer; }
.menu span { display: block; height: 1.5px; background: var(--text); margin: 5px 0; }
@media (max-width: 1024px) {
  .menu { display: block; }
  .nav { position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: rgba(6,13,23,.97); border-bottom: 1px solid var(--trench); padding: .5rem var(--margin) 1rem; display: none; }
  .nav.open { display: flex; }
  .nav a[aria-current="page"] { box-shadow: inset 2px 0 0 var(--sonar); }
  .topbar-in { gap: 1rem; justify-content: space-between; }
}
@media (max-width: 640px) { .topbar-end .badge { display: none; } }
/* 语言切换：顶栏右侧一个小号文字钮 */
.lang-switch { color: var(--text-2); font: 500 12px/1 var(--f-mono); letter-spacing: .08em; padding: .45rem .55rem; border: 1px solid var(--trench); border-radius: var(--r); white-space: nowrap; }
.lang-switch:hover { color: var(--sonar); border-color: var(--sonar); }
/* 英文页：中文专用的字距与断行规则不适用 */
html[lang="en"] body { word-break: normal; overflow-wrap: break-word; }

/* ── 按钮（切角，像机加工的铜仪器外壳）───────────────── */
.btn {
  --bc: var(--trench); --fg: var(--cyan);
  display: inline-flex; align-items: center; gap: .5rem; justify-content: center;
  font: 500 13px/18px var(--f-mono); letter-spacing: .06em; text-transform: uppercase;
  color: var(--fg); background: var(--deep); border: 1px solid var(--bc); padding: .8rem 1.25rem;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  cursor: pointer; transition: background .15s, box-shadow .15s, border-color .15s, color .15s; white-space: nowrap;
}
.btn:hover { --bc: var(--cyan); color: var(--fg); }
.btn-primary { --bc: var(--sonar); --fg: var(--sonar); }
.btn-primary:hover { background: rgba(0,255,204,.1); box-shadow: 0 0 10px rgba(0,255,204,.3); --bc: var(--sonar); }
.btn-brass { --bc: var(--brass); --fg: var(--brass); }
.btn-sm { padding: .45rem .8rem; font-size: 11px; line-height: 16px; letter-spacing: .08em; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; box-shadow: none; }
.link-brass { color: var(--brass); border-bottom: 1px solid rgba(212,175,55,.4); }
.link-brass::after { content: " ↗"; font-family: var(--f-mono); }
.link-arrow::after { content: " →"; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }

/* ── 徽标 ───────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; gap: .45rem; font: 500 11px/16px var(--f-mono); letter-spacing: .08em; text-transform: uppercase;
  padding: .3rem .6rem; border: 1px solid var(--trench); color: var(--text-2); border-radius: var(--r-sm); white-space: nowrap; }
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-ok { color: var(--sonar); border-color: var(--sonar); background: rgba(0,255,204,.05); }
.badge-ok .dot { animation: pulse 1.6s ease-in-out infinite; }
.badge-info { color: var(--cyan); border-color: var(--cyan); }
.badge-warn { color: var(--brass); border-color: rgba(212,175,55,.7); background: rgba(212,175,55,.06); }
.badge-err { color: var(--error); border-color: var(--error); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

/* ── 卡片（带角刻度）─────────────────────────────────── */
.card { position: relative; background: var(--deep); border: 1px solid var(--trench); border-radius: var(--r); padding: 1.5rem; }
.card-2 { background: var(--console); border-top-color: rgba(56,189,248,.4); }
.card::before, .card::after { content: ""; position: absolute; width: 8px; height: 8px; pointer-events: none; }
.card::before { top: -1px; left: -1px; border-top: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }
.card::after { bottom: -1px; right: -1px; border-bottom: 1px solid var(--cyan); border-right: 1px solid var(--cyan); }
.card-head { display: flex; justify-content: space-between; gap: 1rem; font: 400 10px/14px var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--tick); margin: -.5rem 0 1rem; }
.card h3 { margin-bottom: .5rem; }
.card p:last-child { margin-bottom: 0; }
.card-seal { border-color: var(--brass); box-shadow: 0 0 15px rgba(212,175,55,.2); }
.card-seal::before, .card-seal::after { border-color: var(--brass); }
.card-big { font: 700 40px/1.1 var(--f-head); color: var(--text); margin: .5rem 0 .75rem; }

/* ── 表格 ───────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--trench); border-radius: var(--r); background: var(--deep); }
table { width: 100%; border-collapse: collapse; font-size: 14px; line-height: 22px; }
th, td { padding: .7rem 1rem; text-align: left; border-bottom: 1px solid var(--trench); vertical-align: top; }
th { font: 500 11px/16px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); background: rgba(17,34,64,.5); white-space: nowrap; }
tbody tr:nth-child(even) { background: rgba(17,34,64,.25); }
tbody tr:last-child td { border-bottom: 0; }
td.n, th.n { text-align: right; font-family: var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
td.n { color: var(--text-2); }
.table-note { margin-top: .75rem; }

/* ── 首屏 ───────────────────────────────────────────── */
.hero { position: relative; min-height: calc(100vh - 64px); max-height: 960px; display: flex; align-items: center; overflow: hidden; border-bottom: 1px solid var(--trench); }
.hero-field { position: absolute; inset: 0; }
.hero-field canvas { width: 100%; height: 100%; }
.hero-shade { position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(6,13,23,.94) 0%, rgba(6,13,23,.7) 38%, rgba(6,13,23,.1) 70%, rgba(6,13,23,0) 100%),
              linear-gradient(0deg, rgba(6,13,23,.85) 0%, rgba(6,13,23,0) 30%); }
.hero-copy { position: relative; z-index: 2; max-width: 640px; padding: 4rem 0; pointer-events: none; }
.hero-copy > * { pointer-events: auto; }
.hero-copy h1 { margin: 1.25rem 0; }
.hero-copy h1 em { font-style: normal; color: var(--sonar); }
/* 英文首页标题：Syne 拉丁字母比中文宽得多，按 48px 会折成五六行 */
html[lang="en"] .hero-copy { max-width: 720px; }
html[lang="en"] .hero-copy h1 { font-size: 40px; line-height: 46px; }
@media (max-width: 640px) { html[lang="en"] .hero-copy h1 { font-size: 28px; line-height: 34px; } }
.hero-copy .lead { margin-bottom: 2rem; color: #b8c4d6; }
.hero-meta { position: absolute; right: var(--margin); bottom: 1.25rem; z-index: 2; display: flex; gap: 1rem; flex-wrap: wrap; justify-content: flex-end; font: 400 10px/14px var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
.hero-meta b { color: var(--cyan); font-weight: 500; }
.hero-tip { position: absolute; z-index: 3; pointer-events: none; background: rgba(6,13,23,.85); backdrop-filter: blur(12px); border: 1px solid var(--trench); padding: .35rem .6rem; font: 500 11px/16px var(--f-mono); letter-spacing: .06em; color: var(--text); display: none; white-space: nowrap; }
.hero-tip b { color: var(--brass); }
.hero-live { position: absolute; left: var(--margin); bottom: 1.25rem; z-index: 2; }
@media (max-width: 640px) {
  .hero { min-height: 560px; align-items: flex-end; }
  .hero-shade { background: linear-gradient(0deg, rgba(6,13,23,.96) 0%, rgba(6,13,23,.75) 55%, rgba(6,13,23,.25) 100%); }
  .hero-copy { padding: 3rem 0 4.5rem; }
  .hero-meta { left: var(--margin); right: var(--margin); justify-content: flex-start; }
  .hero-live { display: none; }
}

/* ── 三步 ───────────────────────────────────────────── */
.step-n { font: 500 11px/16px var(--f-mono); letter-spacing: .1em; color: var(--sonar); }
.step svg { width: 100%; height: auto; margin: .75rem 0 1rem; border: 1px solid var(--trench); background: var(--abyss); border-radius: var(--r); }

/* ── 鱼种 ───────────────────────────────────────────── */
.fishes { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: .75rem; }
.fish { background: var(--deep); border: 1px solid var(--trench); border-radius: var(--r); padding: 1rem .75rem; text-align: center; position: relative; }
.fish-img { height: 84px; display: flex; align-items: center; justify-content: center; margin-bottom: .5rem; }
.fish-img img { max-height: 84px; width: auto; transform: scaleX(-1); filter: drop-shadow(0 0 8px rgba(56,189,248,.25)); }
.fish-mult { font: 700 24px/1 var(--f-head); color: var(--brass); }
.fish-name { font-size: 14px; color: var(--text); margin: .35rem 0 .15rem; }
.fish-p { font: 400 11px/16px var(--f-mono); color: var(--text-2); }
.fish-eq { margin-top: 1.25rem; font: 500 13px/18px var(--f-mono); letter-spacing: .04em; color: var(--text-2); text-align: center; }
.fish-eq b { color: var(--sonar); font-weight: 500; }
@media (max-width: 1200px) { .fishes { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 640px) { .fishes { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ── 实时读数 ───────────────────────────────────────── */
.stats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border: 1px solid var(--trench); border-radius: var(--r); background: var(--deep); }
.stat { padding: 1.25rem 1.25rem 1rem; border-right: 1px solid var(--trench); min-width: 0; }
.stat:last-child { border-right: 0; }
.stat-v { font: 500 26px/32px var(--f-mono); font-variant-numeric: tabular-nums; color: var(--cyan); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color .4s; }
.stat-v.flash { color: var(--sonar); }
.stat-v small { font-size: 13px; color: var(--dim); margin-left: .25rem; }
.stat-k { font-size: 13px; color: var(--text-2); margin-top: .25rem; }
.stat-src { font: 400 10px/14px var(--f-mono); letter-spacing: .08em; color: var(--tick); margin-top: .5rem; }
.stats-foot { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: .75rem; }
@media (max-width: 1024px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } .stat { border-bottom: 1px solid var(--trench); } .stat:nth-child(2n) { border-right: 0; } }
@media (max-width: 640px) { .stats { grid-template-columns: 1fr; } .stat { border-right: 0; } }

/* ── 输入 ───────────────────────────────────────────── */
.field { display: flex; align-items: stretch; border: 1px solid var(--trench); background: var(--abyss); border-radius: var(--r); }
.field:focus-within { border-color: var(--cyan); }
.field-icon { display: flex; align-items: center; padding: 0 .75rem; color: var(--cyan); font-family: var(--f-mono); }
.field input { flex: 1; min-width: 0; background: transparent; border: 0; color: var(--text); font: 400 14px/22px var(--f-mono); padding: .8rem .5rem; outline: none; caret-color: var(--sonar); }
.field input::placeholder { color: var(--tick); }
.field .btn { clip-path: none; border-width: 0 0 0 1px; }
.seg { display: inline-flex; border: 1px solid var(--trench); border-radius: var(--r); overflow: hidden; flex-wrap: wrap; }
.seg button { background: var(--deep); color: var(--text-2); border: 0; border-right: 1px solid var(--trench); font: 500 13px/18px var(--f-mono); padding: .55rem .9rem; cursor: pointer; }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { color: var(--sonar); background: rgba(0,255,204,.08); box-shadow: inset 0 -2px 0 var(--sonar); }

/* ── 地址读数 ───────────────────────────────────────── */
.addr { font: 400 13px/18px var(--f-mono); color: var(--cyan); background: var(--abyss); border: 1px solid var(--trench); padding: .15rem .45rem; border-radius: var(--r-sm); cursor: copy; white-space: nowrap; }
.addr.copied { color: var(--sonar); border-color: var(--sonar); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1.25rem; font-size: 14px; line-height: 22px; }
.kv dt { color: var(--dim); font: 500 11px/22px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; }
.kv dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }

/* ── 流程图 ─────────────────────────────────────────── */
.flow { display: grid; grid-template-columns: repeat(var(--n, 5), minmax(0, 1fr)); gap: 0; border: 1px solid var(--trench); border-radius: var(--r); background: var(--deep); }
.flow > div { padding: 1.25rem; border-right: 1px solid var(--trench); position: relative; }
.flow > div:last-child { border-right: 0; }
.flow > div::after { content: "→"; position: absolute; right: -.55rem; top: 1.25rem; color: var(--cyan); background: var(--deep); font-family: var(--f-mono); z-index: 1; }
.flow > div:last-child::after { display: none; }
.flow b { display: block; font-weight: 600; margin: .35rem 0; }
.flow p { color: var(--text-2); font-size: 14px; line-height: 22px; margin: 0; }
@media (max-width: 1024px) { .flow { grid-template-columns: 1fr; } .flow > div { border-right: 0; border-bottom: 1px solid var(--trench); } .flow > div::after { content: "↓"; right: auto; left: 1.25rem; top: auto; bottom: -.8rem; } }

/* ── 常见问题 ───────────────────────────────────────── */
.faq details { border-bottom: 1px solid var(--trench); }
.faq summary { cursor: pointer; list-style: none; padding: 1.1rem 2rem 1.1rem 0; font-weight: 500; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: .25rem; top: 1rem; color: var(--cyan); font: 400 20px/1 var(--f-mono); }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 0 1.25rem; color: var(--text-2); max-width: 820px; }

/* ── 页眉 ───────────────────────────────────────────── */
.page-head { padding: 4.5rem 0 3rem; border-bottom: 1px solid var(--trench); background: linear-gradient(180deg, rgba(10,25,47,.6), rgba(6,13,23,0)); }
.page-head h1 { margin: .75rem 0 1rem; }
.coords { font: 400 10px/14px var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--tick); }
.prose { max-width: 820px; }
.prose h2 { font-size: 28px; line-height: 36px; margin: 3.5rem 0 1rem; scroll-margin-top: 88px; }
.prose h3 { margin: 2rem 0 .5rem; }
.prose ul, .prose ol { padding-left: 1.25rem; color: var(--text); }
.prose li { margin: .35rem 0; }
.prose li::marker { color: var(--cyan); }
.callout { border-left: 2px solid var(--brass); background: rgba(212,175,55,.06); padding: 1rem 1.25rem; margin: 1.5rem 0; border-radius: 0 var(--r) var(--r) 0; }
.callout-sonar { border-left-color: var(--sonar); background: rgba(0,255,204,.05); }
.toc { position: sticky; top: 88px; font-size: 14px; }
.toc a { display: block; color: var(--text-2); padding: .3rem 0 .3rem .75rem; border-left: 1px solid var(--trench); }
.toc a:hover { color: var(--text); border-left-color: var(--cyan); }
.with-toc { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 3rem; }
@media (max-width: 1024px) { .with-toc { grid-template-columns: 1fr; } .toc { display: none; } }

/* ── 分段条 ─────────────────────────────────────────── */
.splitbar { display: flex; height: 44px; border: 1px solid var(--trench); border-radius: var(--r); overflow: hidden; font: 500 12px/1 var(--f-mono); }
.splitbar > div { display: flex; align-items: center; justify-content: center; white-space: nowrap; overflow: hidden; }
.splitbar .p { flex: 95; background: rgba(0,255,204,.12); color: var(--sonar); }
.splitbar .t { flex: 1; background: var(--cyan); }
.splitbar .h { flex: 4; background: rgba(212,175,55,.25); color: var(--brass); }
.splitbar-legend { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: .6rem; font-size: 13px; color: var(--text-2); }
.splitbar-legend i { display: inline-block; width: 10px; height: 10px; margin-right: .4rem; vertical-align: -1px; }

/* ── 验证 ───────────────────────────────────────────── */
.vsteps { display: grid; gap: 1rem; }
.vstep { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 1rem; }
.vstep-n { width: 44px; height: 44px; border: 1px solid var(--trench); display: flex; align-items: center; justify-content: center; font: 500 13px/1 var(--f-mono); color: var(--dim); border-radius: 50%; }
.vstep.ok .vstep-n { border-color: var(--sonar); color: var(--sonar); box-shadow: inset 0 0 12px rgba(0,255,204,.15); }
.vstep.bad .vstep-n { border-color: var(--error); color: var(--error); }
.vstep.wait .vstep-n { border-color: var(--cyan); color: var(--cyan); }
.vstep .card { padding: 1.1rem 1.25rem; }
.vstep h3 { font-size: 16px; line-height: 24px; display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.verdict { font: 500 13px/18px var(--f-mono); letter-spacing: .06em; padding: .75rem 1rem; border: 1px solid var(--trench); margin-top: .75rem; }
.verdict.ok { color: var(--sonar); border-color: var(--sonar); background: rgba(0,255,204,.05); }
.verdict.bad { color: var(--error); border-color: var(--error); background: rgba(147,0,10,.15); }
.verdict.note { color: var(--brass); border-color: rgba(212,175,55,.6); }
.raw { margin-top: .75rem; }
.raw summary { cursor: pointer; font: 500 11px/16px var(--f-mono); letter-spacing: .08em; color: var(--cyan); text-transform: uppercase; }
.raw pre { background: var(--abyss); border: 1px solid var(--trench); padding: .75rem; overflow: auto; max-height: 320px; font: 400 12px/18px var(--f-mono); color: var(--text-2); }
.vcanvas { width: 100%; aspect-ratio: 16 / 9; background: var(--abyss); border: 1px solid var(--trench); border-radius: var(--r); margin-top: .75rem; }

/* ── 观战 ───────────────────────────────────────────── */
/* 画面单独一行、左右铺满（两侧只留 16 px）；16:10 与嵌入时观察端的设计分辨率一致 */
.live-wide { padding: 0 16px; }
.live-note { margin: .6rem auto 0; max-width: var(--maxw); padding: 0 calc(var(--margin) - 16px); }
/* 房间信息栏：左边房间，右边 5 个等宽指标；下面一行是档位与房间类型 */
.live-bar { display: grid; grid-template-columns: minmax(220px, 1.2fr) minmax(0, 5fr); grid-template-areas: "room stats" "meta meta";
  border: 1px solid var(--trench); border-radius: var(--r); background: var(--deep); margin-bottom: .75rem; position: relative; }
.live-bar::before { content: ""; position: absolute; top: -1px; left: -1px; width: 8px; height: 8px; border-top: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }
.lb-room { grid-area: room; display: flex; flex-direction: column; justify-content: center; gap: .3rem; padding: .8rem 1.1rem; border-right: 1px solid var(--trench); min-width: 0; }
.lb-name { font: 600 16px/22px var(--f-body); color: var(--text); }
.lb-room .addr { align-self: flex-start; }
.lb-select { background: var(--abyss); color: var(--text); border: 1px solid var(--trench); border-radius: var(--r); font: 500 14px/20px var(--f-body); padding: .3rem .5rem; max-width: 100%; }
.lb-stats { grid-area: stats; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.lb-cell { display: flex; flex-direction: column; justify-content: center; gap: .3rem; padding: .8rem 1.1rem; border-right: 1px solid var(--trench); min-width: 0; }
.lb-cell:last-child { border-right: 0; }
.lb-k { font: 500 10px/14px var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
.lb-v { font: 500 20px/26px var(--f-mono); font-variant-numeric: tabular-nums; color: var(--cyan); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb-v small { font-size: 11px; color: var(--dim); margin: 0 .5rem 0 .2rem; }
.lb-v small:last-child { margin-right: 0; }
.lb-meta { grid-area: meta; display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; padding: .5rem 1.1rem; border-top: 1px solid var(--trench); background: rgba(6,13,23,.35); }
.lb-meta .lb-k { margin-right: .35rem; }
.lb-meta:empty { display: none; }
.chip { font: 500 11px/16px var(--f-mono); color: var(--text-2); border: 1px solid var(--trench); border-radius: var(--r-sm); padding: .1rem .45rem; }
.lb-unit { font: 500 11px/16px var(--f-mono); color: var(--dim); }
.lb-sep { width: 1px; height: 14px; background: var(--trench); margin: 0 .4rem; }
@media (max-width: 1024px) {
  .live-bar { grid-template-columns: 1fr; grid-template-areas: "room" "stats" "meta"; }
  .lb-room { border-right: 0; border-bottom: 1px solid var(--trench); flex-direction: row; align-items: center; gap: .75rem; }
  .lb-stats { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .lb-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lb-cell { border-bottom: 1px solid var(--trench); }
  .lb-cell:nth-child(2n) { border-right: 0; }
  .lb-cell:last-child { grid-column: 1 / -1; border-bottom: 0; }
  .lb-room { flex-wrap: wrap; }
}
.live-bottom { margin-top: 2rem; }
.live-bottom .feed { max-height: 360px; }
.live-stage { position: relative; width: 100%; aspect-ratio: 16 / 10; margin: 0 auto; background: var(--abyss); border: 1px solid var(--trench); border-radius: var(--r); overflow: hidden; }
.live-stage iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.live-stage .placeholder { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem; text-align: center; padding: 1.5rem; }
.rooms button { width: 100%; text-align: left; background: var(--deep); border: 1px solid var(--trench); color: var(--text); padding: .8rem 1rem; border-radius: var(--r); cursor: pointer; margin-bottom: .5rem; font: inherit; }
.rooms button[aria-pressed="true"] { border-color: var(--sonar); box-shadow: inset 0 0 12px rgba(0,255,204,.12); }
.rooms .addr { display: inline-block; margin-top: .35rem; }
.feed { max-height: 560px; overflow-y: auto; border: 1px solid var(--trench); border-radius: var(--r); background: var(--deep); }
.feed-row { display: grid; grid-template-columns: 44px 1fr auto; gap: .5rem; align-items: center; padding: .55rem .8rem; border-bottom: 1px solid var(--trench); font-size: 13px; line-height: 18px; }
.feed-row .seat { font-family: var(--f-mono); color: var(--dim); }
.feed-row .res { font-family: var(--f-mono); text-align: right; white-space: nowrap; }
.feed-row.hit .res { color: var(--brass); }
.feed-row.miss .res { color: var(--text-2); }
.feed-row.refund .res { color: var(--cyan); }
.feed-empty { padding: 1rem; color: var(--dim); font-size: 13px; }
@media (max-width: 640px) { .live-wide { padding: 0 8px; } }

/* ── 内测 ───────────────────────────────────────────── */
.wallets { display: grid; gap: .5rem; }
.wallet-btn { display: flex; align-items: center; gap: .75rem; width: 100%; background: var(--deep); border: 1px solid var(--trench); color: var(--text); padding: .75rem 1rem; border-radius: var(--r); cursor: pointer; font: inherit; text-align: left; }
.wallet-btn:hover { border-color: var(--cyan); }
.wallet-btn img { width: 28px; height: 28px; border-radius: 6px; }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.checklist li { display: grid; grid-template-columns: 22px 1fr; gap: .6rem; align-items: start; font-size: 15px; }
.checklist li::before { content: "○"; font-family: var(--f-mono); color: var(--dim); }
.checklist li.ok::before { content: "●"; color: var(--sonar); }
.checklist li.bad::before { content: "×"; color: var(--error); }
.checklist li.wait::before { content: "◌"; color: var(--cyan); }

/* ── 页脚 ───────────────────────────────────────────── */
.footer { border-top: 1px solid var(--trench); background: rgba(6,13,23,.9); padding: 3rem 0 2rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--gutter); }
.footer-grid a { display: block; color: var(--text-2); font-size: 14px; padding: .2rem 0; }
.footer-grid a:hover { color: var(--text); }
.brand-foot { margin-bottom: .75rem; }
.disclaimer { margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--trench); color: var(--dim); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-grid > div:first-child { grid-column: 1 / -1; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ── AI Skill ───────────────────────────────────────── */
.raw-pre, .skill-src { background: var(--abyss); border: 1px solid var(--trench); border-radius: var(--r); padding: 1rem; overflow: auto; font: 400 13px/20px var(--f-mono); color: var(--text-2); white-space: pre; margin: .75rem 0 0; }
.skill-src { max-height: 640px; white-space: pre-wrap; overflow-wrap: anywhere; }
.card .badge { margin-top: .75rem; }